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Data management method and device

A data management and quantitative technology, applied in the field of Internet of Vehicles, can solve the problems of redundant track storage and slow query speed

Active Publication Date: 2019-09-13
北京睿航至臻科技有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a data management method and device to overcome the problems of redundant track storage and slow query speed in the prior art

Method used

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Embodiment Construction

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] As an important application of the Internet of Things, the Internet of Vehicles has achieved rapid development in recent years. The development of computing technology has continuously increased the frequency of location data collection, and the amount of collected data has exploded. The collection and upload time of location data by ...

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Abstract

The invention provides a data management method and device. The data management method can perform trajectory storage and querying by using a trajectory pattern extracted from lots of historical trajectories. The data management method includes: matching original trajectory points to a road network through a map matching method, and acquiring a trajectory set after map matching; determining a minimum support and a minimum road segment number corresponding to different road types according to training data; establishing a trajectory tree according to the trajectory set, and establishing a trajectory sub-tree with each node of the trajectory tree as a staring point, wherein the trajectory tree and the trajectory sub-trees include at least one node, and each node is an intersection of the road network; determining a trajectory pattern meeting the minimum support and the minimum road segment number, passing through each node according to the trajectory sub-trees; and performing redundancy elimination treatment on the trajectory pattern of each node, and generating a new trajectory pattern and storing the new trajectory pattern. The data management method and device can reduce trajectory storage redundancy, and can accelerate the trajectory querying speed.

Description

technical field [0001] The present invention relates to the technical field of Internet of Vehicles, in particular to a data management method and device. Background technique [0002] With the widespread use of the Global Positioning System (GPS for short) and smart phones, a large amount of spatio-temporal data with location data as the core is generated. As an important application of the Internet of Things, the Internet of Vehicles has also achieved rapid development in recent years. Applications such as the Internet of Vehicles can obtain good economic and social benefits by collecting, storing, and analyzing the spatiotemporal big data of automobiles in real time. At present, the scale of vehicles connected to the Internet of Vehicles is increasing, the stored trajectory data is increasing, and the query is becoming more and more complex. The system is facing severe challenges in real-time storage and query trajectory data. [0003] In terms of storage, trajectory da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29
Inventor 林学练王海轮张明明汤金涛左一萌
Owner 北京睿航至臻科技有限公司
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